diff --git a/wiki/linux/dm-crypt.md b/wiki/linux/dm-crypt.md
index 77d927a..41c4a28 100644
--- a/wiki/linux/dm-crypt.md
+++ b/wiki/linux/dm-crypt.md
@@ -6,3 +6,4 @@
 
 To create a encrypted device simply run:
 `cryptsetup -y -v luksFormat /dev/sda2`.
+Where `/dev/sda2` is the device you want to create.